package apache import ( "bufio" "fmt" "net" "net/http" "net/url" "strconv" "strings" "sync" "time" "github.com/influxdata/telegraf" "github.com/influxdata/telegraf/internal" "github.com/influxdata/telegraf/plugins/inputs" ) type Apache struct { Urls []string Username string Password string ResponseTimeout internal.Duration // Path to CA file SSLCA string `toml:"ssl_ca"` // Path to host cert file SSLCert string `toml:"ssl_cert"` // Path to cert key file SSLKey string `toml:"ssl_key"` // Use SSL but skip chain & host verification InsecureSkipVerify bool client *http.Client } var sampleConfig = ` ## An array of URLs to gather from, must be directed at the machine ## readable version of the mod_status page including the auto query string. ## Default is "http://localhost/server-status?auto". urls = ["http://localhost/server-status?auto"] ## Credentials for basic HTTP authentication. # username = "myuser" # password = "mypassword" ## Maximum time to receive response. # response_timeout = "5s" ## Optional SSL Config # ssl_ca = "/etc/telegraf/ca.pem" # ssl_cert = "/etc/telegraf/cert.pem" # ssl_key = "/etc/telegraf/key.pem" ## Use SSL but skip chain & host verification # insecure_skip_verify = false ` func (n *Apache) SampleConfig() string { return sampleConfig } func (n *Apache) Description() string { return "Read Apache status information (mod_status)" } func (n *Apache) Gather(acc telegraf.Accumulator) error { var wg sync.WaitGroup if len(n.Urls) == 0 { n.Urls = []string{"http://localhost/server-status?auto"} } if n.ResponseTimeout.Duration < time.Second { n.ResponseTimeout.Duration = time.Second * 5 } if n.client == nil { client, err := n.createHttpClient() if err != nil { return err } n.client = client } for _, u := range n.Urls { addr, err := url.Parse(u) if err != nil { acc.AddError(fmt.Errorf("Unable to parse address '%s': %s", u, err)) continue } wg.Add(1) go func(addr *url.URL) { defer wg.Done() acc.AddError(n.gatherUrl(addr, acc)) }(addr) } wg.Wait() return nil } func (n *Apache) createHttpClient() (*http.Client, error) { tlsCfg, err := internal.GetTLSConfig( n.SSLCert, n.SSLKey, n.SSLCA, n.InsecureSkipVerify) if err != nil { return nil, err } client := &http.Client{ Transport: &http.Transport{ TLSClientConfig: tlsCfg, }, Timeout: n.ResponseTimeout.Duration, } return client, nil } func (n *Apache) gatherUrl(addr *url.URL, acc telegraf.Accumulator) error { req, err := http.NewRequest("GET", addr.String(), nil) if err != nil { return fmt.Errorf("error on new request to %s : %s\n", addr.String(), err) } if len(n.Username) != 0 && len(n.Password) != 0 { req.SetBasicAuth(n.Username, n.Password) } resp, err := n.client.Do(req) if err != nil { return fmt.Errorf("error on request to %s : %s\n", addr.String(), err) } defer resp.Body.Close() if resp.StatusCode != http.StatusOK { return fmt.Errorf("%s returned HTTP status %s", addr.String(), resp.Status) } tags := getTags(addr) sc := bufio.NewScanner(resp.Body) fields := make(map[string]interface{}) for sc.Scan() { line := sc.Text() if strings.Contains(line, ":") { parts := strings.SplitN(line, ":", 2) key, part := strings.Replace(parts[0], " ", "", -1), strings.TrimSpace(parts[1]) switch key { case "Scoreboard": for field, value := range n.gatherScores(part) { fields[field] = value } default: value, err := strconv.ParseFloat(part, 64) if err != nil { continue } fields[key] = value } } } acc.AddFields("apache", fields, tags) return nil } func (n *Apache) gatherScores(data string) map[string]interface{} { var waiting, open int = 0, 0 var S, R, W, K, D, C, L, G, I int = 0, 0, 0, 0, 0, 0, 0, 0, 0 for _, s := range strings.Split(data, "") { switch s { case "_": waiting++ case "S": S++ case "R": R++ case "W": W++ case "K": K++ case "D": D++ case "C": C++ case "L": L++ case "G": G++ case "I": I++ case ".": open++ } } fields := map[string]interface{}{ "scboard_waiting": float64(waiting), "scboard_starting": float64(S), "scboard_reading": float64(R), "scboard_sending": float64(W), "scboard_keepalive": float64(K), "scboard_dnslookup": float64(D), "scboard_closing": float64(C), "scboard_logging": float64(L), "scboard_finishing": float64(G), "scboard_idle_cleanup": float64(I), "scboard_open": float64(open), } return fields } // Get tag(s) for the apache plugin func getTags(addr *url.URL) map[string]string { h := addr.Host host, port, err := net.SplitHostPort(h) if err != nil { host = addr.Host if addr.Scheme == "http" { port = "80" } else if addr.Scheme == "https" { port = "443" } else { port = "" } } return map[string]string{"server": host, "port": port} } func init() { inputs.Add("apache", func() telegraf.Input { return &Apache{} }) }